SIFT Exam Practice Test
SIFT Principles of Helicopter Flight Questions and Answers 3
What is 'vortex ring state' (settling with power) in helicopters?
Select your answer
A
A condition where the rotor vortex improves lift efficiency in a hover
B
A dangerous condition where the helicopter descends into its own rotor vortex, losing lift despite high power
C
A situation where the tail rotor enters a vortex from the main rotor
D
A condition caused by flying through the wake of another aircraft
Hint